DE2906629C2 - Device for storing heat-emitting radioactive materials - Google Patents

Description

cut These tubes (22) are not shown here Fasteners connected to a storage rack. The container (21) is held in the tube (22) by spacers (23) radial and fiber shock absorbers (24) through a cover (25) and the housing wall (26) axially 5 fixed The heat released in the stored goods is first transferred to the by radiation and internal convection Wall of the tube (22) and released from there to the environment. The ones for the heat transfer to the secondary cooling system available heat exchanger surface of the pipe is greater than the heat dispensing Hache of the container, whereby the stored goods temperature is relative without any further design effort can be kept low. The advantage is that in the case of indirect cooling, the stored goods are fed through the is Pipe wall completely separated from the external cooling system is what ensures the safe containment of the radioactive Substances guaranteed even if the container leaks. For better heat dissipation, the pipes (22) can also be equipped with cooling fins and / or baffles.

1 sheet of drawings

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Claims (2)

the heat transferred from the inner cooling circuit to the pipe surfaces: dissipates the secondary heat exchanger surface, i.e. the pipe surface, is larger 1.Device for storage emits heat than the heat-emitting surface of the stored goods, radioactive materials, which are placed in containers 5 ie the container surface, so that even with indirect are closed, good heat dissipation is achieved with a concrete housing with supply and cooling Exhaust air shafts for natural convection of a cooling system - the advantage of the safe inclusion of dis radioactive mediums and storage racks with horizontal material even in the event of leaks; namely through fully ordered Receiving shafts for receiving the separation of the inner cooling system from the outer Container, characterized in that io by using closed tubes as Aufdie Receiving shafts formed by pipes (5) near-in-shafts in the storage racks. which are provided with spacers (23), the additional attachment of cooling and that the surface of the tubes (5) from the cooling fins and / or baffles on the tubes to the medium are flowed around. Heat transfer from the stored goods to the cooling medium 2. Device according to claim 1, characterized thereby improving. indicates that cooling fins and / or baffles. Since no heat sinks are required, the building can the tubes (5) are attached. more compact and lower, what theirs Increased security against external influences An exemplary embodiment is shown on the basis of the 20 gen I and II shown schematically in more detail Figure I shows a device in »longitudinal section The invention relates to a device for storage The concrete housing (1) is with supply air (2) and exhaust air heat emitting radioactive materials, which are provided in shafts (3), which the cooling medium directly to Containers are enclosed, with a concrete housing the storage racks (4) inside the concrete housing (1) with supply and exhaust air ducts lead to natural convection of a 25. The storage racks (4) have horizontal cooling medium and storage racks with horizontally receiving shafts in the form of tubes (5), which are also easy arranged receiving shafts for receiving the containers can be inclined ^ nd which the containers (6) with the ter. contain radioactive material. The tubes (5) of the load Such a device is from DE-OS gergestelle (4) are on the one hand close to the wall 28 37 839 known, in the case of the heat emitting radioactive 30 of the concrete housing (1) or the air supply shaft (2) ve materials in 'ager racks made of solid, well-closed and on the other hand for loading conductive materials are housed. The maintenance room (7) is open. The loading room (7) The discharge of the material takes place through heat conduction via the dik- can from the storage racks (4) and the cooling zone ke walls horizontally to form a heat sink, which is completely separated with it. The cooling air is through cooled by means of a cooling medium. This type of 35 the air inlet opening (8) and the air inlet duct (2) in one Heat dissipation is not optimal and very space-consuming distribution chamber (9) below the storage racks (4). dig. sucked, from where it strokes over the pipes (5), there It was therefore the object of the present invention to heat by convection and, as a result of the natural device for storing heat-releasing buoyancy, to find the concrete housing (l leaves that are enclosed in containers (6), in which, with a compact arrangement, a new storage item is introduced from the loading area (7) via unrushed and safe heat dissipation, loading devices that are as consistent as possible into the pipes (5) with a moderate temperature distribution along which the radioactive
The storage racks (4) or the pipes (5) are generally According to the invention, this task was generally produced from material with good thermal conductivity, that the receiving shafts formed by pipes, preferably made of steel. They can be of any cross-section provided with spacers and that cut, but are advantageously round, the surface of the tubes of the cooling medium adapt to the containers (6) for the stored goods and are flowing. improve the heat transfer from the stored goods to the Usually one arranges several storage racks 50 cooling medium. one above the other and / or next to one another in the concrete housing. To fix the stored goods in a horizontal direction As a receiving position in the storage racks, covers can be attached to the loading area (7) closed Ronre, which be attached to an unobstructed coolant-facing side of the tubes (5), the supply little or no resistance to prevent the heated cooling air from the Zen. 55 pipes flows into the loading area and The device according to the invention has the advantage of causing desired temperature increases
A better cooling of the stored goods, since these come as radioactive stored goods, for example, waste conditioned horizontally or slightly horizontally, gases in pressure bottles, HTR-inclined storage in raw fuel elements in cans or light water reactors around which the cooling medium flows, is much more effective than in massive storage - 60 fuel assemblies in cans in question. The storage of racks. The stored goods are fed over their entire length. In the case of indirect cooling, the fuel elements can also have a cooling medium of the same temperature applied to them; A temperature distribution occurs only along the perimeter without any special enclosure in its own container. the container containing the radioactive materials Figure II shows a section from a warehouse, it frame mi; a single slot in the longitudinal The pipes are provided with spacers. Die and cross section. Containers are placed in the pipes. The stored goods enclosed in a container (21) are working one with indirect cooling, whereby the cooling medium is located in a tube (22) with a cylindrical transverse